QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

Earthquake near Morgan, UT

No earthquake was likely felt in Morgan in the 24 hours to 4:46 pm MST (23:46 UTC). The last one was M 3.5, 45 km (28 mi) SW, at 6:32 pm MST on 13 February 2026, estimated intensity II (weak) in town; 4,122 felt reports to USGS. Every earthquake near Morgan

This page: a magnitude 1.5 earthquake was recorded 10 km (6 mi) northeast of Morgan, UT, at 10:01 pm MST on 28 January 2023 (05:01 UTC), 9.1 km deep.

USGS: 10 km NE of Morgan, Utah

46 km (29 mi) NE of Salt Lake City, UT · 31 km (19 mi) E of Layton, UT

10:01 pm MST, Jan 28, 2023 · · 9.1 km deep · released about 5.6 lb of TNT

Every earthquake near Morgan Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 2 kmWeber County 30 kmDavis County 51 kmSalt Lake County 56 kmSummit County 59 kmRich County 65 kmCache County 71 kmUinta County 89 kmWasatch County 93 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
10:01 pm MST on 28 January 2023 ()
Where
10 km (6 mi) northeast of Morgan, UT · earthquakes near Morgan
Magnitude
M 1.5 (md)
Depth
9.1 km below the surface
Felt
no reports yet
Nearest
Morgan County, 2 km SE
Nearest mapped fault
Morgan fault, 7 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1382 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 5 km (3 mi) from the epicentre. In Morgan, 10 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Mountain Green, Coalville, Fruit Heights, Uintah, South Weber, Farmington.

How big was it?

This earthquake released about 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.5 26 km E of Avon, Utah · 44 km N of this epicentre
  2. 5.3 Near Salt Lake City, Utah · 48 km SSW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 41.1075, -111.5975. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 2 km (2 mi) SE earthquakes near Morgan County
Weber County, UT 30 km (18 mi) NW earthquakes near Weber County
Davis County, UT 51 km (32 mi) W earthquakes near Davis County
Salt Lake County, UT 56 km (35 mi) SSW earthquakes near Salt Lake County
Summit County, UT 59 km (37 mi) ESE earthquakes near Summit County
Rich County, UT 65 km (40 mi) NNE earthquakes near Rich County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

44 earthquakes have been recorded within 50 km since this one.

  1. 1.5 10 km ENE of Mountain Green, Utah
  2. 1.6 18 km N of Henefer, Utah
  3. 1.7 2 km ESE of Echo, Utah
  4. 3.3 13 km E of Huntsville, Utah
  5. 1.8 13 km ESE of Centerville, Utah
  6. 1.7 4 km WNW of Silver Summit, Utah
  7. 1.5 8 km E of Avon, Utah
  8. 1.9 7 km NE of Huntsville, Utah
  9. 1.5 7 km NE of Huntsville, Utah
  10. 1.6 14 km NE of Enterprise, Utah
  11. 1.5 9 km S of Morgan, Utah
  12. 1.6 9 km S of Morgan, Utah
  13. 1.6 2 km SE of North Salt Lake, Utah
  14. 1.8 12 km ENE of Wolf Creek, Utah
  15. 2.6 15 km NNW of Summit Park, Utah

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.